Interlocking sliding door device

Abstract

To provide an interlocking sliding door device simple in configuration and quietly openable / closable and a guide metal fitting.SOLUTION: The interlocking sliding door comprises: a guide plate fixed to the upper end surface of one sliding door; pulleys each attached to both ends of the guide plate in a longitudinal direction; a belt wound on the pulleys; a body slidably attached to the guide plate in the state of being integrally fixed to the belt; and a guide metal fitting having two arms at least one of which can be inserted into the body and a connection plate formed to be attachable to and detachable from the body via at least one of the two arms. The guide metal fitting holds a shaft of a suspension wheel attached to the other sliding door capable of overlapping one sliding door in a longitudinal direction orthogonal to an opening / closing direction in the state where one of the two arms of the connection plate is inserted in the body to be attached between the two arms.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a linked sliding door device in which, for example, three sliding doors move in a linked manner. [Background technology]

[0002] Conventionally, a sliding door interlocking device has been proposed that can be changed from a type in which the sliding door located on the right side as viewed from the front is at the front to a type in which the sliding door located on the left side as viewed from the front is at the front, simply by flipping the connecting member upside down, and that has a structure that can be used for both types (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-270441 Summary of the Invention [Problem to be solved by the invention]

[0004] In the sliding door interlocking device described in Patent Document 1, in order to interconnect the first to third sliding doors, multiple types of connecting members are required to match the widths of the first to third sliding doors in the front-to-rear direction (depth direction), and further the connecting members and fastening members must be attached with mounting bolts, which creates the problem of forcing the user to perform complicated operations to assemble.

[0005] Furthermore, the sliding door interlocking device described in Patent Document 1 has also had the problem that when the first to third sliding doors are opened or closed, contact noise occurs when parts come into contact with each other.

[0006] The present invention has been made in view of the above-mentioned problems, and has an object to provide an interlocking sliding door device and a guide fitting that are simply configured, can be opened and closed quietly, and are easy to install. [Means for solving the problem]

[0007] The interlocking sliding door device of the present invention comprises a guide plate fixed to the upper end surface of one sliding door, pulleys attached to both longitudinal end portions of the guide plate, a belt wound around the pulleys, a main body attached to the guide plate while being fixed integrally with the belt and able to slide relative to the guide plate, and a guide fitting having two arms, at least one of which can be inserted into the main body, and consisting of a connecting plate formed so as to be detachable from the main body via at least one of the two arms, and when the guide fitting is attached by inserting at least one of the two arms of the connecting plate into the main body, it holds the shaft of a hoist attached to another sliding door that can overlap in the front-to-rear direction perpendicular to the opening and closing direction of the one sliding door, between the two arms.

[0008] In the present invention, the connecting plate preferably has axle support members made of a soft material attached to the two arm portions at locations where the two arm portions come into contact with the shaft portions of the hoist.

[0009] In the present invention, when the two arms of the connecting plate are inserted into and attached to the main body, it is preferable that the distance from the bases of the two arms to the main body be longer than the diameter of the shaft.

[0010] The guide fitting of the present invention comprises a main body portion that is slidably attached to a guide plate fixed to the upper end face of a sliding door via belts wound around two pulleys that are attached to both longitudinal end portions of the guide plate, and a connecting plate that has two arms, at least one of which can be inserted into the main body portion, and is formed so as to be detachable from the main body portion via at least one of the two arms, and when at least one of the two arms is inserted into the main body portion and attached, the connecting plate holds the shaft of a hoist attached to another sliding door that can overlap in the front-to-rear direction perpendicular to the opening and closing direction of the one sliding door, between the two arms. [Effects of the Invention]

[0011] According to the aspects of the present invention, it is possible to realize an interlocking sliding door device and guide fitting that have a simple configuration, can be opened and closed quietly, and is easy to install. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a perspective view showing the overall configuration of an interlocking sliding door device according to an embodiment of the present invention; [Figure 2] 1 is an enlarged perspective view of a main part of an interlocking sliding door device according to an embodiment of the present invention. [Figure 3] 1 is a plan view showing a configuration of an interlocking sliding door device according to an embodiment of the present invention. [Figure 4] 1 is an exploded perspective view showing the configuration of a guide fitting of an interlocking sliding door device according to an embodiment of the present invention before a connecting unit is attached. FIG. [Figure 5] 1 is a perspective view showing the configuration of a guide rail, a guide fitting, and a hoisting wheel of an interlocking sliding door device according to an embodiment of the present invention. [Figure 6] 1 is an exploded perspective view showing the overall arrangement of a guide rail, pulleys, wire belt, and guide fittings of an interlocking sliding door device according to an embodiment of the present invention. FIG. [Figure 7] 1 is a perspective view and an exploded perspective view showing the configuration of a guide rail, a pulley, a wire belt, and a guide fitting of an interlocking sliding door device according to an embodiment of the present invention. [Figure 8] 1 is a perspective view showing the overall configuration of a guide fitting according to an embodiment of the present invention; [Figure 9] FIG. 2 is an exploded perspective view showing the configuration of a main body of the guide fitting according to the embodiment of the present invention. [Figure 10] 10 is a perspective view illustrating an engagement state between a main body of a guide fitting and a connecting plate according to an embodiment of the present invention. FIG. [Figure 11] 1A and 1B are plan views showing the configuration of an interlocking sliding door device according to an embodiment of the present invention when fully open and when fully closed. [Figure 12]FIG. 10 is a plan view showing the configuration of a guide fitting according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0013] 1. Overview of the embodiment First, a typical embodiment of the invention disclosed in this application will be outlined. In the following description, for example, reference numerals in the drawings corresponding to the components of the invention will be given in parentheses.

[0014] [1] In a linked sliding door device (1) according to a representative embodiment of the present invention, there is provided a guide plate (31) fixed to the upper end surface of one sliding door (12), pulleys (32) attached to both longitudinal end portions of the guide plate (31), a belt (33) wound around the pulleys (32), a main body (351) fixed integrally with the belt (33) and slidably attached to the guide plate (31), and a sliding door (352) having two arms (353a) at least one of which can be inserted into the main body (351), and the two arms (353a) are and a guide fitting (35) consisting of a connecting plate (353) formed so as to be detachable from a main body part (351) via at least one of the arms (353a) of the connecting plate (353), and when at least one of the two arms (353a) of the connecting plate (353) is inserted into the main body part (351) and attached, the guide fitting (35) holds, between the two arms (353a), the shaft part (211) of the hoist (21) attached to another sliding door (11) that can overlap in the front-rear direction (direction of arrow ef) perpendicular to the opening / closing direction (direction of arrow ab) of the one sliding door (12).

[0015] [2] In the interlocking sliding door device (1), it is preferable that the connecting plate (353) has a shaft support (358) made of a soft material attached to the two arm portions (353a) at the points where the two arm portions (353a) come into contact with the shaft portion (211) of the hoist (21).

[0016] [3] In the interlocking sliding door device (1), when the two arms (353a) of the connecting plate (353) are inserted into and attached to the main body (351), the distance from the bases (353b) of the two arms (353a) to the main body (351) is longer than the diameter of the shaft (211).

[0017] [4] A guide fitting (35) according to a representative embodiment of the present invention has a main body (351) slidably attached to the guide plate (31) via a belt (33) wound around two pulleys (32) attached to both longitudinal ends of the guide plate (31) fixed to the upper end surface of one sliding door (12), and two arms (353a) at least one of which can be inserted into the main body (351), and at least one of the two arms (353a) The sliding door (12) is provided with a connecting plate (353) that is detachably attached to the main body (351) via another arm (353a), and when at least one of the two arms (353a) of the connecting plate (353) is inserted into the main body (351) and attached, the connecting plate (353) holds, between the two arms (353a), the shaft (211) of the hoist (21) attached to another sliding door (11) that can overlap in the front-to-rear direction (direction of arrow ef) perpendicular to the opening / closing direction (direction of arrow ab) of the one sliding door (12).

[0018] 2. Specific examples of embodiments The configuration of an interlocking sliding door device according to a representative embodiment of the present invention will be described in detail below with reference to Figures 1 to 11. Note that the embodiment shown below is merely an example, and various other forms are possible within the scope of the present invention.

[0019] For convenience of explanation, the opening and closing direction may be referred to as the left-right direction or horizontal direction. That is, the direction of arrow a for opening the sliding door is the opening direction or leftward, and the direction of arrow b for closing the sliding door is the closing direction or rightward. Furthermore, the direction of gravity (arrow cd direction), which is perpendicular to the opening and closing direction of the sliding door (arrow ab direction), may be referred to as the up-down direction. That is, the upper side or upper part of the sliding door is the direction of arrow c, and the lower side or lower part of the sliding door is the direction of arrow d.

[0020] Furthermore, the depth direction (arrow ef direction) perpendicular to the opening / closing direction of the sliding door (arrow ab direction) may be referred to as the front-to-rear direction. That is, the direction of arrow e, in which the sliding door faces from the front to the back of the page, is the back side, and the direction of arrow f, in which the sliding door faces from the back to the front of the page, is the front side. However, the left-right direction, up-down direction, and front-to-rear direction are used for convenience of explanation, and may be defined as different directions depending on the usage situation of the sliding door.

[0021] (2-1) Embodiments of the present invention <Interlocking sliding door device> As shown in Figures 1 to 5, the interlocking sliding door device 1 according to the embodiment of the present invention comprises a top-hung interlocking sliding door 10 (Figure 1) consisting of a first sliding door 11, a second sliding door 12, and a third sliding door 13, which are arranged along guide rails 3, 4, and 5 (Figure 3) fixed in parallel in the front-to-rear direction (direction of arrow ef) to the upper frame of an opening frame of a house or the like, a first hoist 21, a second hoist 22, a third hoist 23, and an interlocking unit 30.

[0022] <Guide rail> The guide rails 3, 4, and 5 all have the same structure. Therefore, only the central guide rail 4 in the front-to-rear direction (the direction of the arrow ef) will be described here, and the other guide rails 3 and 5 will be omitted. The guide rail 4 is fixed to the upper frame of the sliding door, and as shown in Figure 3, is formed in a roughly inverted U shape that opens downward.

[0023] The guide rail 4 comprises a top wall portion 4a extending in the longitudinal direction, a pair of side wall portions 4b extending downward from both short end edges of the top wall portion 4a, and a pair of flange portions 4c extending toward each other in the front-to-rear direction (direction of arrow ef) from the downward tip edges of the pair of side wall portions 4b and arranged apart and facing each other.

[0024] The pair of side wall portions 4b and the pair of flange portions 4c extend in the longitudinal direction, similar to the top wall portion 4a. With the second hoist 22 accommodated in the inverted U-shaped inner accommodation space, the guide rail 4 holds the second hoist 22 movably in the opening / closing direction (the direction of arrow ab) along the guide rail 3.

[0025] Therefore, similarly, with the first hoist 21 and the third hoist 23 accommodated in the inverted U-shaped inner storage space of the guide rails 3 and 5, the first hoist 21 and the third hoist 23 are held so as to be movable in the opening and closing direction (direction of arrow ab) along the guide rails 3 and 5.

[0026] <Sliding door> The first sliding door 11, the second sliding door 12, and the third sliding door 13 are all sliding doors of the same structure, and only the second sliding door 12 will be described here, and the configurations of the other doors, the first sliding door 11 and the third sliding door 13, will be omitted. The reason why the second sliding door 12 will be described here is that the interlocking unit 30 is attached to the second sliding door 12, while the first sliding door 11 and the third sliding door 13 are not attached to the interlocking unit 30.

[0027] The second sliding door 12 is a top-hung sliding door and is made of a thin plate-like member that is roughly rectangular in plan view. However, the second sliding door 12 is not limited to this and may be a transparent thin glass-like member or may be made of various other materials and have other shapes.

[0028] The second sliding door 12 has cutouts 12k (FIG. 5) formed at both upper end portions, and a hoist main body 220 of a second hoist 22 (described later) is embedded in the cutouts 12k and fixed integrally therewith.

[0029] In the present embodiment, the sliding doors are configured as a three-door structure consisting of first sliding door 11, second sliding door 12, and third sliding door 13. However, the present invention is not limited to this structure, and any sliding doors may be configured so long as they open and close in conjunction with one another. For example, a sleeve wall may be used instead of third sliding door 13.

[0030] <Hanging wheel> The first hoist 21, the second hoist 22, and the third hoist 23 all have the same structure. Therefore, only the second hoist 22 will be described here, and the configurations of the other second hoist 22 and third hoist 23 will be omitted.

[0031] The second hoist 22 has a roughly rectangular parallelepiped hoist main body 220 that is accommodated in the cutout 12k of the second sliding door 12, an up / down adjustment bolt 221 that serves as a shaft extending upward (in the direction of arrow e) from the hoist main body 220, and a runner body 222 that is fixed integrally to the upper end of the up / down adjustment bolt 221.

[0032] The hoist main body 220 is a part that is fixed integrally with the second sliding door 12 in a state where it is embedded in a notch 12k provided at the upper end of the second sliding door 12.

[0033] The runner body 222 has a runner main body portion 222a having an approximately rectangular parallelepiped shape, two roller support shafts 223 supported on both side ends of the runner main body portion 222a in the opening / closing direction (direction of arrow ab), and rollers 224 (four in total) made of resin or the like supported on both sides of the roller support shafts 223 in the depth direction of the runner body 222 (direction of arrow ef), two on each side.

[0034] 3, the runner body 222 is freely movable in the opening / closing direction (the direction of arrow ab) along the guide rail 4 by having four rollers 224 roll on the flange portion 4c of the guide rail 4. In other words, the runner body 222 does not generate any running noise that may bother the user, because the rollers 224 made of resin or the like simply roll on the flange portion 4c in the inner space of the guide rail 4.

[0035] The runner body 222 is fixed integrally to the upper end of a vertical adjustment bolt 221 extending upward (in the direction of arrow e) from the hoist main body 220. That is, in the second hoist 22, the hoist main body 220 and the runner body 222 are integrated via the vertical adjustment bolt 221.

[0036] The up / down adjustment bolt 221 is a rod-shaped member of a predetermined length made of, for example, metal, and can adjust the distance between the hoist main body 220 and the runner body 222 by rotating it clockwise or counterclockwise.

[0037] <Interlocking unit> As shown in FIGS. 5 to 7, the interlocking unit 30 has a guide plate 31 attached to the upper end surface 12t of the second sliding door 12, a pulley 32, a wire belt 33, and a guide metal fitting .

[0038] <Guide plate> The guide plate 31 of the interlocking unit 30 is approximately the same size as the length from the end of the upper end face 12t of the second sliding door 12 in the opening direction (direction of arrow a) to the end in the opening direction (direction of arrow b) and the width of the second sliding door 12 in the front-to-back direction (direction of arrow ef).

[0039] The guide plate 31 has through holes 31ha (Figures 6 and 7) formed on both the left and right ends in the longitudinal direction, and supports the pulley 32 rotatably and pivotally via a pulley shaft 32p fitted into the through hole 31ha.

[0040] The guide plate 31 has two through holes 31hb at predetermined positions inside the two through holes 31ha provided on both the left and right end portions, and is fixed to the upper end surface 12t of the second sliding door 12 through these two through holes 31hb using screws or the like (not shown).

[0041] Guide plate 31 has edges 31f (see FIG. 3) that protrude with an L-shaped cross section at the rear end (arrow e direction) and the front end (arrow f direction) of guide plate 31. Edges 31f extend along the longitudinal direction of guide plate 31 from the left end (arrow a direction) to the right end (arrow b direction).

[0042] A main body 351 of the guide fitting 35, which will be described later, engages with this edge 31f, allowing the guide fitting 35 to slide freely in the opening and closing direction (the direction of the arrow ab). Here, the main body 351 of the guide fitting 35 is made of resin or the like, which prevents metallic noises from occurring when sliding against the edge 31f of the guide plate 31.

[0043] <Pulley> The pulley 32 is a thin cylindrical member made of resin or the like, and has an annular groove formed in the center in the up-down direction (direction of arrow cd) for hooking the wire belt 33. The pulley 32 is attached to the guide plate 31 in a rotatable and pivotable state via a bearing attached to the central pulley shaft 32p.

[0044] <Wire belt> A wire belt 33 is wound around the two pulleys 32. Therefore, when the pulley 32 rotates around the pulley shaft 32p, the wire belt 33 moves in the opening direction (direction of arrow a) or the closing direction (direction of arrow b) along with the rotation of the pulley 32.

[0045] Two guide metal fittings 35 are attached integrally to the wire belt 33 (Fig. 6) so that they are positioned furthest from each other. Specifically, metal balls 352 integrated with the wire belt 33 fit into main body 351 of guide metal fitting 35, thereby integrating the two.

[0046] The main body 351 of one guide fitting 35 is integrated with the wire belt 33 by engaging with two metal balls 352 located in the closing direction (direction of arrow a) in Figure 6 (B), and the main body 351 of the other guide fitting 35 is integrated with the wire belt 33 by engaging with one metal ball 352 located in the opening direction (direction of arrow b).

[0047] Therefore, as shown in Figure 6(A), an arrangement is formed in which when one guide fitting 35 reaches the end of the guide plate 31 in the opening direction (direction of arrow a), the other guide fitting 35 reaches the end of the guide plate 31 in the closing direction (direction of arrow b).

[0048] <Guide bracket> As shown in FIGS. 8 and 9, the guide fitting 35 is made up of a main body 351 and a connecting plate 353, and the connecting plate 353 is detachably attached to the main body 351.

[0049] The main body 351 has a roughly rectangular parallelepiped shape and has an attachment space 351p into which the connecting plate 353 can be inserted and removed, and an accommodation space 351s into which the operating lever 355 can be attached, arranged horizontally (in the direction of arrow ab).

[0050] Furthermore, the main body 351 (Figure 9) has a screw hole 351ha for a screw 357 that serves as a stopper to restrict the movement of the operating lever 355 at the right corner of the top surface 351t on the upper side (direction of arrow c), and also has a screw hole 351hb in the bottom surface that defines the storage space 351s, to which the tip of the screw 357 is attached.

[0051] Furthermore, the main body 351 has a pillar 351q that divides the mounting space 351p in half at the center of the mounting space 351p in the longitudinal direction. The pillar 351q serves to position the two arms 353a of the connecting plate 353, which will be described later, when they are inserted.

[0052] At the lower end of the main body 351 on the rear side (in the direction of arrow e) opposite the mounting space 351p and the storage space 351s, an engagement groove 351m consisting of a recessed groove with an L-shaped cross section is formed to engage with and slide on the edge 31f of the above-mentioned guide plate 31.

[0053] The main body 351 has an L-shaped protrusion 351z in which an engagement groove 351m is formed, and is set so that when the engagement groove 351m is engaged with the edge 31f of the guide plate 31, a lower surface 351zb of the protrusion 351z is positioned higher than the upper end surface of the second sliding door 12. In this case, even if the width of the second sliding door 12 in the front-rear direction (direction of arrow ef) becomes even larger and protrudes beyond the width of the guide plate 31, the second sliding door 12 will not come into contact with the lower surface 351zb of the protrusion 351z of the main body 351.

[0054] An operating lever 355 is held and attached so as to be slidable in the left-right direction (the direction of the arrow ab) in the housing space 351s of the main body 351. The operating lever 355 is made of a thin, substantially rectangular metal plate-like member.

[0055] When the operating lever 355 is accommodated in the accommodation space 351s of the main body 351, only the lever portion 355r, which is approximately triangular in plan view and protrudes toward the front (in the direction of arrow f), protrudes from the main body 351 toward the front (in the direction of arrow f) (Figure 8).

[0056] The operating lever 355 also has a protrusion 355t that protrudes toward the mounting space 351p of the main body 351. The protrusion 355t of the operating lever 355 is a portion that engages with a recess 353u (FIG. 8) of the connecting plate 353, which will be described later, and the engagement is released when the operating lever 355 moves to the right (in the direction of arrow b).

[0057] Two protrusions 355v are formed on the right side (direction of arrow b), opposite to the protrusion 355t of the operating lever 355, for holding an elastic body 356 made of a compression coil spring or the like in the accommodation space 351s in a sandwiched state. In other words, the elastic body 356 is disposed between these two protrusions 355v in the accommodation space 351s.

[0058] The elastic body 356 biases the operating lever 355 held in the accommodation space 351s of the main body 351 so as to press it down toward the left side (the direction of the arrow a) where the connecting plate 353 is present. At this time, the protrusion 355t of the operating lever 355 engages with the recess 353u of the connecting plate 353, and the connecting state between the connecting plate 353 and the main body 351 is maintained.

[0059] On the other hand, when the user pushes the lever portion 355r to the right (in the direction of arrow b), the operating lever 355 is moved to the right (in the direction of arrow b) against the biasing force of the elastic body 356, and the engagement between the protrusion 355t of the operating lever 355 and the recess 353u of the connecting plate 353 is released. This allows the connecting plate 353 to be removed from the main body 351.

[0060] The connecting plate 353 (Figure 8) is made of a thin metal plate-like member formed into an approximately U-shape overall, and has two arms 353a extending toward the back (in the direction of arrow e) toward the main body 351, and a base 353b connecting the two arms 353a at their bases in the left-right direction (in the direction of arrow ab).

[0061] A rectangular recess 353u is formed at the tip of each of the two arms 353a. The two recesses 353u are provided at the tip of the two arms 353a so as to face each other back to back.

[0062] These recesses 353u are portions into which the protrusions 355t of the operating lever 355 described above are engaged, and are wide enough to allow the protrusions 355t to fit in. Note that, since the recesses 353u are formed at the tip ends of the two arms 353a, respectively, the connecting plate 353 can be attached upside down.

[0063] Furthermore, chamfered portions 353r that are C-chamfered or R-chamfered are formed at the tip corners of the two arm portions 353a and near the recessed portion 353u. The two chamfered portions 353r are also provided so as to face each other back to back.

[0064] Arc-shaped recesses 353c are formed on both left and right end portions of the base 353b. The two recesses 353c are used when a user holds the connecting plate 353 with their fingertips to attach it to the mounting space 351p of the main body 351 or when removing it from the mounting space 351p of the main body 351.

[0065] A U-shaped shaft stopper 358 made of a soft material is attached to the opposing portions of the two arm portions 353a and to a part of the base portion 353b where the two arm portions 353a join.

[0066] The shaft stopper 358 is made of, for example, urethane rubber or silicone rubber, which is an elastomer material. However, the material is not limited to these, and various other materials can be used as long as they are capable of absorbing shock and suppressing noise, such as fiber-based materials or plastics. The shaft stopper 358 covers both the upper and lower surfaces of the connecting plate 353.

[0067] <Attaching and detaching connecting plates in guide fittings> As shown in Figure 10(A), in the guide fitting 35, before the connecting plate 353 is inserted into the mounting space 351p of the main body 351, only the protrusion 355t of the operating lever 355 of the main body 351 protrudes from the storage space 351s.

[0068] As shown in FIG. 10(B), in the guide fitting 35, when the connecting plate 353 is inserted into the mounting space 351p of the main body 351, the chamfered portion 353r of the arm portion 353a of the connecting plate 353 comes into contact with the protrusion 355t of the operating lever 355.

[0069] As shown in FIG. 10(C), when the connecting plate 353 is inserted further inward (in the direction of the arrow e), the arm 353a resists the biasing force of the elastic body 356 and pushes the operating lever 355 back to the right (in the direction of the arrow b).

[0070] As shown in FIG. 10(D), when the connecting plate 353 is inserted further inward (in the direction of the arrow e), the protrusion 355t of the operating lever 355 fits into and engages with the recess 353u of the connecting plate 353.

[0071] Conversely, to remove the connecting plate 353, the user pushes and moves the lever portion 355r of the operating lever 355 to the right (in the direction of arrow b) with the fingertip, thereby disengaging the protrusion 355t of the operating lever 355 from the recess 353u of the connecting plate 353.

[0072] Therefore, the user can easily remove the connecting plate 353 from the main body 351 by hooking the fingertips into the recessed portion 353c of the connecting plate 353 and pulling it toward the user (in the direction of the arrow f).

[0073] <Installation of interlocking sliding door device> Next, we will explain the installation procedure for the interlocking sliding door device 1. First, the first to third hoists 21 to 23 are attached to the guide rails 3 to 5 so that they can run, and the guide rails 3 to 5 are fixed to the upper frame in this state. A guide plate 31, to which a pulley 32, a wire belt 33, and the main body 351 of the guide fitting 35 are attached, is fixed in advance to the upper end surface 12t of the second sliding door 12.

[0074] Thereafter, the hoist body portions 210, 220, 230 of the first to third hoist wheels 21 to 23 are fitted and fixed into the cutout portions 11t to 13t of the first to third sliding doors 11 to 13. As a result, the first to third sliding doors 11 to 13 are suspended from the guide rails 3 to 5 via the first to third hoist wheels 21 to 23.

[0075] Next, as shown in Figure 4, the main body 351 of the guide fitting 35 is slidably attached to the edge 31f of the guide plate 31 fixed to the upper end surface of the second sliding door 12, and a connecting plate 353 is attached to the main body 351.

[0076] In this case, the connecting plate 353 is inserted into the mounting space 351p of the main body 351 of the guide fitting 35 while ensuring that the shaft portion of the up / down adjustment bolt 211 of the first hoist 21 attached to the first sliding door 11 is placed between the two arms 353a of the connecting plate 353.

[0077] As a result, the main body 351 of the guide fitting 35 and the connecting plate 353 are connected via the up / down adjustment bolt 211 of the first hoist 21. In other words, as shown in Figure 2, the first sliding door 11 is connected to the second sliding door 12 via the guide fitting 35.

[0078] 1, the second sliding door 12 and the third sliding door 13 are similarly connected to each other at the right end (direction of arrow b) of the guide plate 31 via the other guide metal fitting 35. In this way, in the interlocking sliding door device 1, installation of the guide metal fitting 35 has become much easier than before.

[0079] <Action and effect> In the interlocking sliding door device 1 of this embodiment, as shown in FIG. 3, the main body portions 351 of one and the other guide fittings 35 are slidably attached to the edge portions 31f on both sides of the guide plate 31 fixed to the upper end surface of the second sliding door 12, and two connecting plates 353 are attached to the two main body portions 351 with the up and down adjustment bolts 211, 213 interposed between the two arms 353a.

[0080] As a result, in the interlocking sliding door device 1, the first sliding door 11 and the third sliding door 13 are connected via the two guide fittings 35 so that they can move in an interlocking manner with the second sliding door 12 at the center.

[0081] Specifically, as shown in Figure 11(A), when the sliding doors are fully open, the first sliding door 11 to the third sliding door 13 are all completely overlapped in the front-to-back direction (direction of arrow ef), and the opening of the sliding door frame is maximized.

[0082] 11(B), when the sliding doors are fully closed, the overlap of the first sliding door 11 to the third sliding door 13 is at the location where the guide fittings 35 are present, i.e., it is minimized. At this time, the right end (arrow b direction) of the second sliding door 12 and the left end (arrow a direction) of the first sliding door 11 overlap with one guide fitting 35 interposed therebetween, and the left end (arrow a direction) of the second sliding door 12 and the right end (arrow b direction) of the third sliding door 13 overlap with the other guide fitting 35 interposed therebetween.

[0083] In the process from when the sliding door is fully open to when it is fully closed, when the first sliding door 11 is moved to the right (in the direction of arrow b), the second sliding door 12 is pulled and moves to the right (in the direction of arrow b) as the wire belt 33 integrated with the main body 351 of the guide metal fitting 35 moves. At this time, the movement speed of the second sliding door 12 is set to half the movement speed of the first sliding door 11.

[0084] When the first sliding door 11 moves to the right (in the direction of arrow b) until it is fully closed, the main body 351 of one of the guide fittings 35 comes into contact with a stopper 11p fixed to the upper left end of the first sliding door 11, stopping the movement.

[0085] At this time, the main body 351 of the other guide fitting 35 comes into contact with the stopper 13p fixed to the upper right end of the third sliding door 13, stopping the movement of the second sliding door 12. In this way, the interlocking sliding door device 1 is brought into a fully closed state.

[0086] Between the two arms 353a of the connecting plate 353 attached to the main body 351 of the guide fitting 35, there are the up / down adjustment bolt 211 of the first hoist 21 and the up / down adjustment bolt 212 of the second hoist 22, but the shafts of the up / down adjustment bolts 211 and 212 come into contact with the shaft stop 358 of the connecting plate 353 and do not come into contact with the metal part of the connecting plate 353.

[0087] Therefore, even when the first sliding door 11 to the third sliding door 13 move between the fully closed state and the fully open state, the presence of the shaft stop 358 reduces the impact of the up and down adjustment bolts 211, 212 on the connecting plate 353, and also prevents contact noises such as clattering, allowing the sliding doors to be opened and closed quietly.

[0088] Furthermore, because the guide plate 31 is fixed to the upper end surface 12t of the second sliding door 12, the guide plate 31 does not rattle, and no rattling noise is generated when it travels between the guide plate 31 and the second hoist 22. Incidentally, since the guide metal fitting 35 does not slide on the guide rails 3 to 5, even if the guide rails 3 to 5 are slightly twisted due to distortion of the lintel or the like, this does not hinder the travel of the guide metal fitting 35 relative to the guide plate 31.

[0089] In addition, in the interlocking sliding door device 1, the arm portion 353a of the connecting plate 353 has a predetermined length, and when the connecting plate 353 is inserted and attached into the mounting space 351p of the main body portion 351, there is space in which the shaft portions of the up / down adjustment bolts 211, 213 can move in the forward / backward direction (direction of the arrow ef).

[0090] In other words, when the two arms 353a of the connecting plate 353 are inserted into and attached to the main body 351, the distance from the bases 353b of the two arms 353a to the main body 351 is set to be longer than the diameter of the shafts of the up / down adjustment bolts 211 and 213.

[0091] As a result, even if the width of the first sliding door 11 to the third sliding door 13 in the front-to-back direction (direction of arrow ef) is larger or smaller than the standard, the difference in width can be absorbed by the space in the front-to-back direction (direction of arrow ef) created between the base 353b of the connecting plate 353 and the main body 351.

[0092] Therefore, in the interlocking sliding door device 1, there is no need to prepare guide fittings according to the widths of the first sliding door 11 to the third sliding door 13 in the front-to-rear direction (direction of arrow ef), and only one type of guide fitting 35 can be used.

[0093] Furthermore, the guide fittings 35 of the interlocking sliding door device 1 allow the connecting plate 353 to be easily removed from the main body 351 simply by operating the operating lever 355 horizontally without using any special tools, so the first sliding door 11 to the third sliding door 13 connected to each other via the guide fittings 35 can be easily pulled apart, improving operability when removing them from the opening frame of a house or the like.

[0094] Furthermore, since the connecting plate 353 of the guide fitting 35 is made of metal, there is no risk of it being damaged due to insufficient strength even if it is pulled while in contact with the shafts of the up / down adjustment bolts 211, 212 when the first sliding door 11 and the second sliding door 12 move in the opening / closing direction (direction of arrow ab).

[0095] 3. Other embodiments In the above-described embodiment, the case where the target is a top-hung interlocking sliding door 10 consisting of a first sliding door 11, a second sliding door 12, and a third sliding door 13 has been described, but the present invention is not limited to this, and may also be used for a bottom-supported sliding door.

[0096] Furthermore, in the embodiment of the present invention, the case where both of the two arm portions 353a of the connecting plate 353 are inserted into the main body portion 351 has been described, but the present invention is not limited to this.

[0097] 12, only one arm 353a of the connecting plate 353 may be shortened to about half its original length, and only the other arm 353a may be inserted into the main body 351s, so that the protrusion 355t of the operating lever 355 engages with the recess 353u of the connecting plate 353. In this case, the main body 351s can be set to be shorter in length in the horizontal direction (the direction of the arrow ab) than the main body 351 (FIG. 9).

[0098] The interlocking sliding door device 1 according to the present invention is not limited to the above-described embodiment. Those skilled in the art can appropriately modify the interlocking sliding door device 1 according to conventionally known knowledge. As long as the configuration of the present invention is still maintained even after such modifications, it is of course included in the scope of the present invention. [Explanation of symbols]

[0099] REFERENCE SIGNS LIST 1... Interlocking sliding door device, 3, 4, 5... Guide rail, 10... Top-hung interlocking sliding door, 11... First sliding door, 12... Second sliding door, 13... Third sliding door, 21... First hoist, 22... Second hoist, 23... Third hoist, 30... Interlocking unit, 31... Guide plate, 32... Pulley, 33... Wire belt, 35... Guide fitting, 220... Hoist main body, 221 ...up and down adjustment bolt, 222...runner body, 222a...runner main body, 223...roller support shaft, 224...roller, 351...main body, 352...metal ball, 353...connecting plate, 353a...arm, 353r...chamfered portion, 355...operating lever, 355r...lever portion, 355t...protrusion, 353u...recess, 356...elastic body, 357...screw, 358...shaft stop.

Claims

1. a guide plate fixed to an upper end surface of one of the sliding doors; pulleys attached to both longitudinal end portions of the guide plate; a belt wound around the pulley; a guide fitting including a main body portion slidably attached to the guide plate while being fixed integrally with the belt, and a connecting plate having two arms, at least one of which can be inserted into the main body portion, and formed so as to be detachable from the main body portion via at least one of the two arms; Equipped with When at least one of the two arms of the connecting plate is inserted into the main body and attached, the guide fitting holds the shaft of a hoist attached to another sliding door that can overlap in the front-to-rear direction perpendicular to the opening and closing direction of the one sliding door between the two arms. Interlocking sliding door device.

2. The connecting plate has a shaft support made of a soft material attached to the two arms at the locations where the two arms come into contact with the shaft of the hoist. The interlocking sliding door device according to claim 1.

3. When the two arms of the connecting plate are inserted into and attached to the main body, the distance from the bases of the two arms to the main body is longer than the diameter of the shaft. The interlocking sliding door device according to claim 1.

4. a main body portion slidably attached to a guide plate fixed to an upper end surface of one sliding door via a belt wound around two pulleys attached to both longitudinal end portions of the guide plate; a connecting plate having two arms, at least one of which can be inserted into the main body, and formed so as to be detachable from the main body via at least one of the two arms; Equipped with When at least one of the two arms is inserted into and attached to the main body, the connecting plate holds the shaft of a hoist attached to another sliding door that can overlap in a direction perpendicular to the opening and closing direction of the one sliding door between the two arms. Guide fittings.

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